Question

Ratio between the two numbers is 7:9 and their sum is 80 . find the numbers

Answer 1

AnswEr :

• The two numbers are 35 and 45.

Given :

• Ratio of the 2 numbers = 7 : 9
• Sum of the 2 numbers = 80

SoluTion :

☆ Let us assume that the 1st no. be 7x and 2nd no. be 9x, respectively!!

Now,

By considering the above given information,

$\implies$ 7x + 9x = 80

$\implies$ 16x = 80

$\implies$ x = 80/16

$\implies$ x = 5

☆ As per our assumption!!

• 1st no. = 7x

$\implies$ 7 × 5

$\implies$ 35

• 2nd no. = 9x

$\implies$ 9 × 5

$\implies$ 45

$\therefore$ The two numbers are 35 and 45.

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Answer 2

The two unknown numbers are 35 and 45.

Given :

• Ratio of the 2 numbers = 7:9
• Sum of the 2 numbers = 80

To Find :

The unknown numbers.

Solution :

• Consider the:

The first number as 7y and second as 9y.

Now,

⟹ 80 = 7y + 9y

⟹ 16y = 80

⟹ x = 80/16

⟹ x = 5

As we considered,

• First number as - 7y

⟹ 7 × 5

⟹ 35

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• Second number as - 9y

⟹ 9 × 5

⟹ 45

Hence, The two unknown numbers are 35 and 45.